Stalag Luft III will be forever remembered as the Great Escape camp after the iconic film about 76 PoWs who fled, only for most of them to be rounded up and executed by the Gestapo . Previously unseen sketches have revealed another tunnel was already being built not long after the 76 allied airmen broke out. One drawing shows PoWs sitting on chairs made from old Red Cross crates that were used to conceal the chamber entrance. A cross section of the underground passage reveals it led towards the